Eudolph ueltzen



(No Model.)

R. UELTZEN.

WATCH KEY.

No. 432,584. Patented July 22, 1890.

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a J w a WITNESEEE 'R UNITE STATES PATENT OFFICE.

RUDOLPH UELTZEN, OF NEW YORK, N. Y.

WATCH-KEY.

SPECIFICATION forming part Of Letters Patent NO. 432,584, dated July 22, 1890.

' application filed January 11, 1890. Serial No. 336,642. (No model.)

To all whom it may concern.-

Be it known that I, RUDOLPH UELTZEN, of New York city, New York, have invented an Improved Watch-Key, of which the following is a specification.

This invention relates to a watch or clock key that will automatically adjust itself to engage winding-arbors of different sizes.

It consists in the various features of improvement more fully pointed out in the claim.

In the accompanying drawings, which is on an enlarged scale, Figure 1 is a side elevation of a watch or clock key embodying my improvement; Fig. 2, a longitudinal central sec-' tion on line 00 at, Fig. 1; Fig. 3, an elevation of the spring-jaws,'and Fig. 4 an end view of the key on a greatly enlarged scale.

Theletter a represents the barrel of a watch or clock key, through Which extend a pair of spring-jaws I). These jaws are riveted together Within the barrel, but outside of the barrel the protruding ends I) of the jaws have a tendency to recede from each other. These ends are squared, Fig. 4, and are adapted to engage the winding-arbor of a watch or clock.

The jaws b are free to be revolved within thecam-groove the jaws 1) project out of the barrel, and the outer corner of such jaws is'by their springing action held in permanent contact with the cam-groove.

I11 use the jaws are first revolved by handle c until they assume their open position. (Shown by dotted lines in Fig. 4.) They are then slipped over the winding-arbor and revolved in the direction indicated by the arrow. During the first part of this revolution the jaws Will be crowded into their closed position (shown in full lines, Fig. 4,) until they tightly grasp the arbor. It is clear that the smaller the arbor the further the jaws will close upon it. I use a plate (I at each end of the barrel a.

By using either end of the key watches in which the arbor turns to the right, as well as Watches in which the arbor turns to the left, may be Wound up.

What I claim is In a watch-key, the combination of a slotted barrel, with a pair of revolving springjaws extending through the barrel and out of its ends, a handle engaging the jaws and passing out of the slot in the barrel, and with eccentric end plates through which both ends of the jaws pass, substantially as specified.

RUDOLPH UELTZEN. Witnesses:

F. v. BRIESEN, A. J ONGHMANS. 

